Where can it be found by us?被动语态变主动语态

Where can we find it?we finish the work by six o‘clock every afternoonDo you often clean your roomwhere do they make the machines We don't write homework in such a hurryHe often takes care of the old grannyBill looks after a cat carefully on Sunday变被动语态we finish the work by six o‘clock every afternoonThe work is finished by six o‘clock every afternoonDo you often clean your roomIs your room often cleaned by you?where do they make the machinesWhere are the machines made by them? We don't write homework in such a hurryHomework isn't written in such a hurry.He often takes care of the old grannyThe old granny is often taken care of by him.Bill looks after a cat carefully on SundayA cat is looked after carefully by Bill on Sunday.